VMS software in General Analog CCTV Discussion Posted August 9, 2018 Just running a quick question by you guys. Our facility has 20+ DVRs. We are planning to slowly change the older ones out. All of our users are currently using Smart PSS. My question is does it matter what brand of DVR we buy in the future if I still want to use PSS? Is it possible to do this or do some brands make you use their own VMS software?